def __init__(
self,
nack_handler: Optional[NackHandler] = None,
message_transformer: Optional[MessageTransformer] = None,
credentials: Optional[Credentials] = None,
transport: str = "grpc_asyncio",
client_options: Optional[ClientOptions] = None,
):
"""
Create a new AsyncSubscriberClient.
Args:
nack_handler: A handler for when `nack()` is called. The default NackHandler raises an exception and fails the subscribe stream.
message_transformer: A transformer from Pub/Sub Lite messages to Cloud Pub/Sub messages. This may not return a message with "message_id" set.
credentials: If provided, the credentials to use when connecting.
transport: The transport to use. Must correspond to an asyncio transport.
client_options: The client options to use when connecting. If used, must explicitly set `api_endpoint`.
"""
self._impl = MultiplexedAsyncSubscriberClient(
lambda subscription, partitions, settings: make_async_subscriber(
subscription=subscription,
transport=transport,
per_partition_flow_control_settings=settings,
nack_handler=nack_handler,
message_transformer=message_transformer,
fixed_partitions=partitions,
credentials=credentials,
client_options=client_options,
)
)
self._require_started = RequireStarted()
def __init__(
self,
*,
executor: Optional[ThreadPoolExecutor] = None,
nack_handler: Optional[NackHandler] = None,
reassignment_handler: Optional[ReassignmentHandler] = None,
message_transformer: Optional[MessageTransformer] = None,
credentials: Optional[Credentials] = None,
transport: str = "grpc_asyncio",
client_options: Optional[ClientOptions] = None,
):
"""
Create a new SubscriberClient.
Args:
executor: A ThreadPoolExecutor to use. The client will shut it down on __exit__. If provided a single threaded executor, messages will be ordered per-partition, but take care that the callback does not block for too long as it will impede forward progress on all subscriptions.
nack_handler: A handler for when `nack()` is called. The default NackHandler raises an exception and fails the subscribe stream.
message_transformer: A transformer from Pub/Sub Lite messages to Cloud Pub/Sub messages. This may not return a message with "message_id" set.
credentials: If provided, the credentials to use when connecting.
transport: The transport to use. Must correspond to an asyncio transport.
client_options: The client options to use when connecting. If used, must explicitly set `api_endpoint`.
"""
if executor is None:
executor = ThreadPoolExecutor()
self._impl = MultiplexedSubscriberClient(
executor,
lambda subscription, partitions, settings: make_async_subscriber(
subscription=subscription,
transport=transport,
per_partition_flow_control_settings=settings,
nack_handler=nack_handler,
reassignment_handler=reassignment_handler,
message_transformer=message_transformer,
fixed_partitions=partitions,
credentials=credentials,
client_options=client_options,
),
)
self._require_started = RequireStarted()